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Electromagnets are made of soft iron bec...

Electromagnets are made of soft iron because soft iron has

A

High retentivity and low coercive force

B

Low retentivity and high coercive force

C

High retentivity and high coercive force

D

Low retentivity and low coercive force

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The correct Answer is:
A
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AAKASH INSTITUTE ENGLISH-MAGNETISM AND MATTER -ASSIGNMENT (SECTION C)
  1. There are four light weight rod samples A,B,C and D separately suspen...

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  2. A short bar magnet of magnet moment 0.4 JT^(-1) is placed in a uniform...

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  3. Electromagnets are made of soft iron because soft iron has

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  4. A vibration magnetometer placed in magnetic meridian has a small bar m...

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  5. A closely wound solenoid of 2000 turns and area of cross-section 1.5xx...

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  6. The magnetic moment of a diamagnetic substance is

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  7. Two identical bar magnets are fixed with their centres at a distance d...

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  8. Charge q is uniformly spread on thin ring of radius R. The ring rotate...

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  9. A bar magnet having a magnetic moment of 2xx10^(4) JT^(-1) is free to ...

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  10. If a diamagnetic substance is brought near the North or the South pol...

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  11. Curie temperature is the temperature above which

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  12. Nickel shows ferromagnetic property at room temperature. If the temper...

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  13. Above Curie temperature:-

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  14. If the magnetic dipole moment of an atom of diamagnetic material, para...

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  15. A bar magnet having a magnetic moment of 2xx10^(4) JT^(-1) is free to ...

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  16. A bar magnet of magnetic moment M, is placed in a magnetic field of in...

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  17. Tangent galvanometer is used to measure : -

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  18. The work done in turning a magnet of magnetic moment 'M' by an angle 9...

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  19. Dua to the earth's magnetic field, charged cosmic ray particles

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  20. For protecting a sensitive equipment from the external magnetic field,...

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